每个新的机场都要经过选位、设计和施工三个步骤才能修建起来。其中,选位是最重要的一环。即使设计很仔细,施工很认真,也弥补不了选位不当造成的损失。例如,有的机场选在地势起伏很大的地方,后来虽然设计得很仔细,但是机场的土方工程量仍然很大。又如,有的军用机场,位置选在离城市很近的地方,不仅影响城市发展,飞机的噪声对居民也有很大危害。不仅如此,飞 Each new airport has to go through the election, design and construction of three steps to build up. Among them, the election is the most important part. Even if the design is very careful, construction is very serious, but also can not make up for the loss caused by improper positioning. For example, some airports were chosen from very rough terrain, and although carefully designed, the amount of earthworks at the airport remained high. In another example, some military airports are located very close to the city, not only affecting the development of the city, the noise of the aircraft is also a great hazard to the residents. Not only that, fly